A mixing device for polyethylene pellets
By setting up a multi-stage screening component in the polyethylene granule mixing device, the problem of incomplete screening in existing devices is solved, and efficient screening and mixing of polyethylene granules is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU WEIFENG PACKAGING CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-07
AI Technical Summary
In existing polyethylene granule mixing devices, the screening effect is not good, resulting in granules and powders smaller than the qualified size passing directly through, which affects the mixing effect.
A multi-stage screening assembly is installed inside the mixing device cylinder, including a connecting column, a guide shell, and a screening component. The screening component performs multi-stage screening of polyethylene particles and conveys larger and smaller materials to the guide shell and cylinder respectively, preventing smaller materials from entering the cylinder.
This method achieves thorough screening of polyethylene particles, ensuring that qualified particles enter the cylinder, preventing small particles from affecting the mixing ratio, and improving the mixing effect.
Smart Images
Figure CN224465033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyethylene processing technology, and specifically to a mixing device for polyethylene granules. Background Technology
[0002] In the production of tubular films (low-pressure bags, high-pressure bags), a mixing device is used to uniformly mix raw materials such as polyethylene and high-gloss masterbatch, which is a method for uniform production of tubular films.
[0003] Chinese patent document CN215428810U discloses a mixing device for polyethylene granules, including a mixing tank body. A top cover is connected to the top outer wall of the mixing tank body via a flange, and a filter tank is welded to the top outer wall of the top cover. The filter tank has an internal cavity, and a first screen and a second screen are clamped inside the cavity. The first screen is located above the second screen. Two slag outlets are opened on one side of the outer wall of the filter tank, and two guide grooves are installed on one side of the outer wall of the filter tank via bolts. The guide grooves are located outside the slag outlets. An electromagnetic vibrator is installed on one side of the outer wall of the mixing tank body via bolts.
[0004] In the above scheme, by clamping the first and second screens inside the filter tank to the polyethylene particles, and allowing the screened material to be discharged through the slag outlet, the first and second screens can only screen larger particles during use. This results in particles and powder smaller than the qualified size being directly conveyed from the filter tank to the mixing tank, leading to poor screening effect. Utility Model Content
[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a mixing device for polyethylene granules.
[0006] The technical solution of this utility model is: a mixing device for polyethylene granules, comprising a cylinder, a guide shell, a connecting column, and a feed pipe;
[0007] The connecting column is located at the top center of the cylinder and extends to the bottom of the inner side of the cylinder. The outer side of the connecting column is equipped with a screening component for multi-stage screening of polyethylene particles and connected to the cylinder during use.
[0008] The number of guide shells is at least two, both of which are set on the side of the cylinder and extend to the inside of the cylinder, and are respectively connected to the top and bottom parts of the screening assembly;
[0009] The feed pipe is located at the top of the cylinder and above the screening assembly.
[0010] Preferably, the middle part of the connecting column is hollow.
[0011] Preferably, the top of the feed pipe is bent towards the side of the cylinder.
[0012] Preferably, the screening assembly includes a first spiral screen plate, a second spiral screen plate, a spiral plate, and a connecting plate;
[0013] The first spiral sieve plate, the second spiral sieve plate, and the spiral plate are arranged at equal intervals on the outside of the connecting column along the height direction of the connecting column;
[0014] The connecting plate is located at the bottom of the connecting column and is connected to the first spiral screen plate, the second spiral screen plate, the spiral plate and the cylinder.
[0015] Preferably, a notch is provided on the surface of the first spiral screen plate and at the bottom end of the first spiral screen plate and the spiral plate, and the flow guide shell is located in the notch.
[0016] Preferably, the top of the connecting plate and the side of the notch are provided with a baffle that is connected to the lower surface of the spiral plate and the second spiral screen plate.
[0017] Preferably, a discharge port is provided on the surface of the connecting plate and at the bottom end of the second spiral screen plate.
[0018] Preferably, a blocking plate is provided on the side of the connecting column and at the top of the first spiral screen plate, the second spiral screen plate and the spiral plate, which is connected to the first spiral screen plate, the second spiral screen plate and the spiral plate.
[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0020] This invention features a multi-stage screening assembly installed inside the cylinder, with multiple outlets of the assembly connected to the guide shell and the cylinder, allowing larger and smaller materials to be conveyed to the guide shell and discharged, while qualified polyethylene particles are conveyed into the cylinder. This results in better screening of polyethylene particles and avoids smaller materials being directly conveyed into the cylinder. Attached Figure Description
[0021] Figure 1 This is a perspective view of one embodiment of the present invention.
[0022] Figure 2 This is a cross-sectional schematic diagram of the cylindrical structure in one embodiment of the present invention.
[0023] Figure 3-4 These are schematic diagrams of the screening component structure in one embodiment of this utility model.
[0024] Figure 5 This is a schematic diagram of the connecting plate structure in one embodiment of the present invention.
[0025] Reference numerals in the attached drawings: 1. Cylinder; 2. Guide shell; 3. Connecting column; 4. Feed pipe; 5. First spiral screen plate; 6. Second spiral screen plate; 7. Spiral plate; 8. Baffle; 9. Connecting plate; 10. Discharge port; 11. Notch; 12. Blocking plate. Detailed Implementation
[0026] Example 1
[0027] like Figure 1-5 As shown, the present invention proposes a mixing device for polyethylene granules, comprising a cylinder 1, a guide shell 2, a connecting column 3, and a feed pipe 4.
[0028] The connecting column 3 is located at the top center of the cylinder 1 and extends to the inner bottom of the cylinder 1. The outer side of the connecting column 3 is provided with a screening component for multi-stage screening of polyethylene particles in use and connected to the cylinder 1. Since the outside of the mixing tank in the prior art has an electromagnetic vibrator, when the cylinder 1 is installed at the top of the mixing tank, the screening component and the cylinder 1 vibrate synchronously with the mixing tank, and the polyethylene particles move along the surface of the screening component through vibration and are screened. At the same time, qualified polyethylene particles are conveyed to the cylinder 1 through the middle part of the screening component.
[0029] The number of guide shells 2 is at least two. Both guide shells 2 are set on the side of the cylinder 1 and extend to the inside of the cylinder 1. They are respectively connected to the top and bottom parts of the screening assembly. They are used to collect and discharge the larger and smaller materials screened by the screening assembly during use, so as to prevent the smaller materials from entering the cylinder 1.
[0030] The feed pipe 4 is located at the top of the cylinder 1 and above the screening assembly, and is used to convey polyethylene particles to the top of the screening assembly during use.
[0031] In an optional embodiment, the middle part of the connecting column 3 is hollow, which allows polyethylene particles to be directly conveyed into the cylinder 1 through the middle part of the connecting column 3 during use, and the cylinder 1 to convey them into the mixing cylinder, thereby improving the convenience of polyethylene particles and avoiding the need for the polyethylene particles to be screened again after screening.
[0032] In an optional embodiment, the top end of the feed pipe 4 is bent toward the side of the cylinder 1 to create a gap between the top end of the feed pipe 4 and the connecting column 3 when polyethylene particles are fed to the screening assembly through the feed pipe 4, thereby preventing mutual obstruction between the feed pipe 4 and the connecting column 3.
[0033] In this embodiment, by setting a multi-stage screening assembly inside the cylinder 1, when the feed pipe 4 conveys polyethylene particles to the inside of the cylinder 1, the screening assembly screens out the larger and smaller particles and conveys them to the guide shell 2, so that the guide shell 2 collects and discharges them. At the same time, the screening assembly conveys qualified polyethylene particles to the cylinder 1, so that the screening of polyethylene particles is more thorough and avoids the direct conveying of smaller materials into the cylinder 1, which would affect the proportion of polyethylene particles.
[0034] Example 2
[0035] like Figure 2-5 As shown, the present invention proposes a mixing device for polyethylene particles. Compared with the first embodiment, the difference in this embodiment is that the screening component includes a first spiral screen plate 5, a second spiral screen plate 6, a spiral plate 7 and a connecting plate 9.
[0036] The first spiral screen plate 5, the second spiral screen plate 6, and the spiral plate 7 are arranged at equal intervals on the outside of the connecting column 3 along the height direction of the connecting column 3. The first spiral screen plate 5 and the second spiral screen plate 6 are both formed by setting through holes in the middle of the spiral plate and fixing the screen in the through holes of the spiral plate. Their connection method is not shown in the prior art diagram.
[0037] The connecting plate 9 is located at the bottom of the connecting column 3 and is connected to the first spiral screen plate 5, the second spiral screen plate 6, the spiral plate 7 and the cylinder 1.
[0038] In an optional embodiment, a blocking plate 12 is provided on the side of the connecting column 3 and at the top of the first spiral screen plate 5, the second spiral screen plate 6 and the spiral plate 7, which is connected to the first spiral screen plate 5, the second spiral screen plate 6 and the spiral plate 7. This blocking plate is used to seal the top of the first spiral screen plate 5, the second spiral screen plate 6 and the spiral plate 7 during use to prevent polyethylene particles from moving upwards between the first spiral screen plate 5 and the second spiral screen plate 6 and the spiral plate 7.
[0039] In this embodiment, the polyethylene particles are supported by the first spiral screen plate 5 and move along the first spiral screen plate 5. At the same time, the first spiral screen plate 5 screens out larger polyethylene particles and causes the rest to fall to the second spiral screen plate 6. Meanwhile, the second spiral screen plate 6 screens out qualified polyethylene particles and conveys smaller particles to the spiral plate 7. The larger and smaller materials screened out by the first spiral screen plate 5 and the spiral plate 7 are conveyed to the guide shell 2, where they are collected and discharged. At the same time, the second spiral screen plate 6 conveys qualified materials to the cylinder 1, so that the polyethylene particles are mixed with other materials.
[0040] Example 3
[0041] like Figure 3-4As shown, the present invention proposes a mixing device for polyethylene granules. Compared with the first embodiment, the difference is that a notch 11 is provided on the surface of the first spiral screen plate 5 and at the bottom of the first spiral screen plate 5 and the spiral plate 7. The guide shell 2 is located in the notch 11 and is used to position the guide shell 2 during use, so that the first spiral screen plate 5 and the spiral plate 7 can directly transport the material to the guide shell 2.
[0042] In an optional embodiment, the top of the connecting plate 9 and one side of the notch 11 are provided with a baffle 8 connected to the lower surface of the spiral plate 7 and the second spiral screen plate 6, which is used to prevent the material from moving to the bottom of the second spiral screen plate 6 and the spiral plate 7 during use, thus preventing the material from accumulating.
[0043] In an optional embodiment, a discharge port 10 is provided on the surface of the connecting plate 9 and at the bottom end of the second spiral screen plate 6, for conveying qualified polyethylene particles screened by the second spiral screen plate 6 to the cylinder 1 through the discharge port 10 during use, so as to facilitate the screening and discharge of polyethylene particles.
[0044] In this invention, polyethylene granules are conveyed onto the first spiral screen plate 5 via the feed pipe 4. Simultaneously, the first spiral screen plate 5 supports the polyethylene granules and causes them to move along its surface. During this movement, the first spiral screen plate 5 screens out larger granules, allowing the remaining granules to fall onto the second spiral screen plate 6. The second spiral screen plate 6 screens out qualified polyethylene granules and conveys smaller granules to the spiral plate 7. A connecting plate 9 connects to the bottom ends of the first spiral screen plate 5, the second spiral screen plate 6, and the spiral plate 7, with the surface of the connecting plate 9 fitting snugly against the first spiral screen plate 5 and the second spiral screen plate 7. The rotary screen plate 6 and the spiral plate 7 are equipped with a discharge port 10 and a notch 11. The guide shell 2 is located in the notch 11 to collect the larger and smaller materials screened by the first spiral screen plate 5 and the spiral plate 7 and discharge them to the outside. The second spiral screen plate 6 conveys qualified polyethylene particles to the cylinder 1 through the discharge port 10, so that the screening of polyethylene particles is more thorough and smaller materials are not directly conveyed into the cylinder 1, which would affect the proportion of polyethylene particles. At the same time, the connecting column 3 is hollow in the middle, so that polyethylene particles are directly added into the cylinder 1 and conveyed to the mixing tank, avoiding the need for screening qualified polyethylene particles again.
[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A mixing device for polyethylene granules, characterized in that, It includes a cylinder (1), a guide shell (2), a connecting column (3), and a feed pipe (4); The connecting column (3) is located at the top center of the cylinder (1) and extends to the bottom of the inner side of the cylinder (1). The outer side of the connecting column (3) is provided with a screening component for multi-stage screening of polyethylene particles and communicating with the cylinder (1) in use. The number of guide shells (2) is at least two. Both guide shells (2) are set on the side of the cylinder (1) and extend to the inside of the cylinder (1), and are respectively connected to the top and bottom parts of the screening assembly. The feed pipe (4) is located at the top of the cylinder (1) and above the screening assembly.
2. The mixing device for polyethylene granules according to claim 1, characterized in that, The middle part of the connecting column (3) is hollow.
3. The mixing device for polyethylene granules according to claim 1, characterized in that, The top of the feed pipe (4) is bent toward the side of the cylinder (1).
4. A mixing device for polyethylene granules according to claim 1, characterized in that, The screening assembly includes a first spiral screen plate (5), a second spiral screen plate (6), a spiral plate (7), and a connecting plate (9); The first spiral sieve plate (5), the second spiral sieve plate (6) and the spiral plate (7) are arranged at equal intervals on the outside of the connecting column (3) along the height direction of the connecting column (3); The connecting plate (9) is set at the bottom of the connecting column (3) and connected to the first spiral screen plate (5), the second spiral screen plate (6), the spiral plate (7) and the cylinder (1).
5. A mixing device for polyethylene granules according to claim 4, characterized in that, A notch (11) is provided on the surface of the first spiral screen plate (5) and at the bottom of the first spiral screen plate (5) and the spiral plate (7), and the flow guide shell (2) is located in the notch (11).
6. A mixing device for polyethylene granules according to claim 4, characterized in that, A baffle (8) is provided at the top of the connecting plate (9) and on one side of the notch (11) to connect with the lower surface of the spiral plate (7) and the second spiral screen plate (6).
7. A mixing device for polyethylene granules according to claim 4, characterized in that, A discharge port (10) is provided on the surface of the connecting plate (9) and at the bottom end of the second spiral screen plate (6).
8. A mixing device for polyethylene granules according to claim 4, characterized in that, A blocking plate (12) is provided on the side of the connecting column (3) and at the top of the first spiral screen plate (5), the second spiral screen plate (6) and the spiral plate (7) to connect with the first spiral screen plate (5), the second spiral screen plate (6) and the spiral plate (7).